Heme released from hemoglobin in aged red blood cells is decomposed in the liver into
A) iron and the bile pigment biliverdin, which is eventually converted to bilirubin.
B) serum and plasma proteins.
C) iron and interleukins.
D) iron and the bile pigment bilirubin, which is eventually converted to biliverdin.
A
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The oxygen-binding protein found in muscle cells is ________
A) hemoglobin B) immunoglobin C) ATP D) myoglobin
A systolic murmur makes a "lub swish-dup" sound
Indicate whether the statement is true or false
What attaches epithelial cells to the basement membrane?
A. Gap junction B. Hemidesmosomes C. Tight junction D. Adhesion belt E. Desmosomes
The sinoatrial node, or cardiac pacemaker, is ________.
A) electrically active nodal tissue located in the wall of the left ventricle B) embedded in the anterior two-thirds of the interventricular septum C) able to cause the atria and ventricles to contract simultaneously D) able to cause the cardiac muscle to begin to contract at the apex E) embedded in the posterior wall of the right atrium, near the entrance of the superior vena cava